JP2004358358A - Electrostatic atomization apparatus with anion generating function and air purifier equipped with the same - Google Patents

Electrostatic atomization apparatus with anion generating function and air purifier equipped with the same Download PDF

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JP2004358358A
JP2004358358A JP2003159996A JP2003159996A JP2004358358A JP 2004358358 A JP2004358358 A JP 2004358358A JP 2003159996 A JP2003159996 A JP 2003159996A JP 2003159996 A JP2003159996 A JP 2003159996A JP 2004358358 A JP2004358358 A JP 2004358358A
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water
electrode
needle
generating function
electrostatic atomizer
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JP4186718B2 (en
Inventor
Kazutaka Suzuki
一敬 鈴木
Kenji Obata
健二 小幡
Takayuki Nakada
隆行 中田
Hiroshi Suda
洋 須田
Mikio Ito
幹夫 伊東
Atsushi Isaka
篤 井坂
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Priority to JP2003159996A priority Critical patent/JP4186718B2/en
Priority to PCT/JP2004/007597 priority patent/WO2004110642A1/en
Priority to TW093115042A priority patent/TWI243713B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • A61L9/145—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes air-liquid contact processes, e.g. scrubbing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/22—Ionisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20—Method-related aspects
    • A61L2209/22—Treatment by sorption, e.g. absorption, adsorption, chemisorption, scrubbing, wet cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Epidemiology (AREA)
  • Dispersion Chemistry (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Electrostatic Separation (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrostatic atomization apparatus with an anion generating function and an air purifier equipped with the electrostatic atomization apparatus. <P>SOLUTION: This electrostatic atomization apparatus with the anion generating function is composed of an applying electrode 2 for applying negative voltage to the water housed in a water holding part 6, a counter electrode 3 to be grounded, a water absorbing body 4 which is in contact with the water housed in the part 6, the acicular atomizing tip part of which is opposed to the electrode 3 and which is used for atomizing the water sucked from the part 6 electrostatically and an ionizing needle 5 for generating an anion by corona discharge in the space between the electrode 3 and the needle 5. The electrode 3 is used in common when the water is atomized electrostatically and when the anion is generated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明はマイナスイオンの発生機能を備えた静電霧化装置とこれを備えた空気清浄機に関するものである。
【０００２】
【従来の技術】
ミストを発生させる霧化装置として、特許第３２６０１５０号公報（特許文献１）に示されているような静電霧化装置がある。これは図７に示すように、水Ｗを収容した水タンク６と、水タンク６内の水を毛細管現象で吸い上げて先端の針状霧化部に導く吸水体４と、吸水体４の針状霧化部に対向する対向電極３と、水タンク６内の水Ｗもしくは吸水体４で保持されている水に印加電極２を介して電圧を印加する高圧発生回路１５とからなり、対向電極３との間の放電箇所となる吸水体４の針状霧化部に存在する水にレイリー分裂を起こさせて霧化することでミストＭを発生させるものである。
【０００３】
また、マイナスイオンを発生させるマイナスイオン発生装置も良く知られている。これは対向電極と対向する針状電極に高圧の負電圧を印加させてコロナ放電を行わせることでマイナスイオンを発生させるものである。
【０００４】
【特許文献１】
特許第３２６０１５０号公報
【０００５】
【発明が解決しようとする課題】
静電霧化装置もマイナスイオン発生装置も電気的な構成はほぼ同じであるが、針状電極に水を保持させることはできない上に、静電霧化の方がマイナスイオン発生よりも大きな電圧が必要でマイナスイオン発生装置に静電霧化用の高電圧を印加した時には人体に悪影響を及ぼすオゾンが大量に発生することから、単一の構成で静電霧化とマイナスイオン発生の両機能を持たせることはできないといったことがあるために、これまでマイナスイオン発生機能を備えた静電霧化装置は提供されていない。
【０００６】
また、空気清浄機には湿式除塵のために静電噴霧装置を備えたものはあったが、室内に静電霧化によるミストを放出することができる空気清浄機は提供されていない。
【０００７】
本発明はこのような点に鑑みなされたものであって、その目的とするところはマイナスイオン発生機能を備えた静電霧化装置とこれを備えた空気清浄機を提供するにある。
【０００８】
【課題を解決するための手段】
しかして本発明にかかるマイナスイオン発生機能付き静電霧化装置は、水保持部に負電圧を印加する印加電極と、接地されている対向電極と、上記水に接触しているとともに上記対向電極に先端の針状霧化部を対向させて水保持部から吸い上げた水を静電霧化させる吸水体と、上記対向電極との間のコロナ放電でマイナスイオンを発生させるイオン化針とからなることに特徴を有している。対向電極を静電霧化とマイナスイオン発生とにおいて共用するようにしたものである。
【０００９】
この時、上記イオン化針は上記印加電極に電気的に接続されたものであるとともに、吸水体の針状霧化部と対向電極との間の距離よりもイオン化針と対向電極との間の距離の方が長くされていると、マイナスイオン発生と静電霧化とで同電圧の負電圧を用いることができるために、使用する高電圧発生回路も共用することができ、しかもオゾンの発生のおそれを無くすことができる。
【００１０】
また、複数本の吸水体がイオン化針を中心とする同心円状に並んでいることも好ましい。各吸水体の針状霧化部に対して均一な電界をかけることを容易に行うことができて安定したミスト発生を得られる上に、対向電極までの上記距離の差の設定も容易となる。
【００１１】
イオン化針はその他端が水保持部内に突出しているものであってもよい。イオン化針に対する負電圧の印加を水を通じて確実に行うことができる。
【００１２】
そして本発明にかかる空気清浄機は、送風用のファン及び除塵用のフィルターを備えるとともに、請求項１〜４のいずれかの項に記載のマイナスイオン発生機能付き静電霧化装置がファン及びフィルターの下流側に配されていることに特徴を有している。フィルターによる空気清浄化と同時にミストの発生とマイナスイオンの発生とを得ることができるものであり、しかもフィルターよりも下流側にマイナスイオン発生機能付き静電霧化装置を配しているために、空気中の塵埃で静電霧化装置の機能が損なわれてしまうことが殆どないものである。
【００１３】
【発明の実施の形態】
以下本発明を実施の形態の一例に基づいて詳述すると、図示例の静電霧化装置１は霧化させることになる水を収容した水タンク６を下部に備えたもので、円筒状で且つ周面に通風孔１２が開口するホルダー１０と、該ホルダー１０の上部に配された対向電極３と、ホルダー１０の下部に嵌め込まれて水に対する電圧印加を担う印加電極２と、この印加電極２によって保持されている複数本の棒状吸水体４と、同じく印加電極２によって保持されているイオン化針５とで構成されており、カップ状に形成されて水保持部を構成する上記水タンク６は、その上端開口縁の外面の突起６０が上記ホルダー１０の下部に装着されている印加電極２の外周フランジ部２１に設けられている係合凹所２９にバヨネット係合することで取り付けられている。
【００１４】
対向電極３と印加電極２は共にカーボンのような導電材を混入した合成樹脂やＳＵＳのような金属で形成されることで導電性を有しているもので、ホルダー１０の上部に被せられる対向電極３はその外周面に形成された接続用突部３０の外面に接触する接地用接触板７１を通じて接地される。ホルダー１０の下部内に嵌め込み固定されてホルダー１０内面のリブ１１で押さえ固定されている印加電極２も同じく外周面に形成された接続用突部２０の外面に接触する接触板７２を介して高電圧発生源に接続される。
【００１５】
前記棒状吸水体４は、多孔質セラミックで形成されてその上端が針状に尖った針状霧化部となっているもので、複数本、図示例では６本の吸水体４が印加電極２に取り付けられている。これら吸水体４は印加電極２の中央に配されたイオン化針５を中心とする同心円上に等間隔で配置されて、上部が印加電極２よりも上方に突出し、下部は下方に突出して上記水タンク６内に入れられた水と接触する。
【００１６】
図中２２は印加電極２から下方に突出している円筒状のスカートで、上記複数本の吸水体４の外側を囲んでいるとともに、その下端は吸水体４の下端よりも下方に位置し、下端開口には格子状の格子状保護カバー１７が被せられている。印加電極２における該スカート２２は、水タンク６内に入れられた水と接触することで水に高電圧を印加すると同時に、上記格子状保護カバー１７と共にセラミックで形成されている吸水体４の保護を行うものである。
【００１７】
ここで、印加電極２は、水タンク６が連結された時、水タンク６の上面開口を略密閉してしまうことで、傾いた時にも水タンク６内の水が漏れ出ることがないようにしており、この関係で上記スカート２２の周方向の一部にはスカート２２の上下方向全長にわたるスリット２３を設けて、水を入れた水タンク６の装着時に上記スリット２３によってスカート２２で囲まれた空間内の空気を抜いてスカート２２内への水の流入を許すようにしている。
【００１８】
ホルダー１０の上面開口を閉じるように装着された対向電極３は、図３に示すように中央に開口部３１を有するとともに、この開口部３１の縁は上方から見た時、前記複数本の吸水体４の上端の針状部を中心とする複数の同一径の円弧Ｒを他の円弧ｒで滑らかにつないだものとなっている。対向電極３を接地し、印加電極２に高電圧発生源を接続するとともに、吸水体４が毛細管現象で水を吸い上げている時、吸水体４の上端の針状霧化部が印加電極２側の実質的な電極として機能すると同時に、対向電極３の上記円弧Ｒが実質的な電極として機能するものである。なお、上記開口部３１には格子状保護カバー１６が被せられることで、開口部３１を通じてイオン化針５や吸水体４に手指などが接触することが防止されている。
【００１９】
今、水を入れた水タンク６を装着して、印加電極２のスカート２２に水を接触させると同時に、吸水体４に毛細管現象で水を吸い上げさせ、さらに対向電極３を接地するとともに印加電極２に高電圧発生源を接続して、印加電極２に負電圧を印加した時、この電圧が水にレイリー分裂を起こさせることができる高電圧であれば、吸水体４の上端の針状霧化部に達した水はここでレイリー分裂を起こしてナノメータサイズの粒子径の霧化を生じさせる静電霧化がなされる。
【００２０】
また、この静電霧化装置１では印加電極２によって保持されているイオン化針５にも負電圧が同時に印加され、対向電極３との間でのコロナ放電によってマイナスイオンの発生もなされる。この時、電極間の距離が同じであればマイナスイオン発生のために必要な電圧よりも静電霧化に必要な電圧の方が高いことから、ここでは吸水体４の上端の針状部から対向電極３までの距離Ｌ１よりも、イオン化針５から対向電極３までの距離Ｌ２をかなり長くすることで静電霧化の方を生じやすくしている。もっとも、水タンク６内の水が無くなるとともに吸水体４で保持している水も霧化されてなくなれば、上記マイナスイオンの発生のみが継続して行われる。
【００２１】
図４に他例を示す。これは対向電極３の中央に配したイオン化針５の下端を下方に延長して水タンク６内の水と接触するようにしたものである。印加電極２とイオン化針５との間の電気的接触度（抵抗値）は製造上の理由にばらつきが生じるが、印加電極２で負電圧が印加される水タンク６内の水にイオン化針５も接触させることで、イオン化針５に安定した負電圧を供給することができるものである。図中１９はホルダー１０に両端部が回動自在に取り付けられた取手である。
【００２２】
図５及び図６は上記静電霧化装置１を備えた空気清浄機７を示している。モータ８３に寄って駆動されるファン８２と風洞７０とからなる送風機を備えて、前面の吸い込み口７６から吸い込んだ空気をフィルター部８１で濾過した後、吹き出し口７７から外部に放出するのであるが、この空気清浄機７における吸い込み口７６から吹き出し口７７に至るまでの空気流路のうち、上記送風機における風洞７０内で且つ吹き出し口７７の近傍位置に上記静電霧化装置１が配設されている。
【００２３】
静電霧化で生じたナノメータサイズの粒子径のミストであるナノサイズミストは拡散性が元々高いが、送風機による送風に乗って広がるためにさらに拡散性が良好になっているものであり、このためにナノサイズミストが有している活性種によるところの室内空気中の臭気成分や室内壁面への付着物についての脱臭機能を有効に利用することができる。特に図示例のものでは、風洞７０の一部に設けた収納凹所７３内に静電霧化装置１を配置した時、接触板７１，７２と前記接続用突部２０，３０との接触を可能とするために収納凹所７３の壁面に明けた開口部７４（図１参照）と静電霧化装置１のホルダー１０における通風孔１２を通じて、静電霧化装置１の内部に一部の風が流入するために、霧化が促進されて霧化量が増大するとともにミストが風に乗って飛散しやすくなっている。
【００２４】
また、風洞７０内に静電霧化装置１が配されているものの、静電霧化装置１付近を通過する空気はフィルター部８１で濾過された清浄な空気であり、このために静電霧化装置１が汚れることはなく、上述のように一部の風が静電濾過装置１内に入るものの、汚れが原因で静電霧化が生じにくくなることが殆どないものである。
【００２５】
【発明の効果】
以上のように本発明に係るマイナスイオン発生機能付き静電霧化装置においては、対向電極を静電霧化とマイナスイオン発生とにおいて共用するために、少ない部品点数でマイナスイオン発生機能も備えたものとすることができる。
【００２６】
また本発明にかかる空気清浄機は、フィルターによる空気清浄化と同時にミストの発生とマイナスイオンの発生とを得ることができる上に、空気中の塵埃で静電霧化装置が汚れてそのの機能が損なわれてしまうことが殆どないものである。
【図面の簡単な説明】
【図１】本発明の実施の形態の一例の断面図である。
【図２】同上の断面図である。
【図３】同上の格子状カバーを外した状態の平面図、
【図４】同上の他例の断面図である。
【図５】本発明に係る空気清浄機の一例の縦断面図である。
【図６】同上の横断面図である。
【図７】静電霧化装置の概略を示す説明図である。
【符号の説明】
１ 静電霧化装置
２ 印加電極
３ 対向電極
４ 吸水体
５ イオン化針
６ 水タンク[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electrostatic atomizer having a function of generating negative ions and an air purifier having the same.
[0002]
[Prior art]
As an atomizing device for generating mist, there is an electrostatic atomizing device as disclosed in Japanese Patent No. 3260150 (Patent Document 1). As shown in FIG. 7, a water tank 6 containing water W, a water absorber 4 that sucks up water in the water tank 6 by capillary action and guides the water to a needle-shaped atomizing portion at the tip, and a needle of the water absorber 4 An opposing electrode 3 opposing the atomizing portion; and a high-voltage generating circuit 15 for applying a voltage to the water W in the water tank 6 or the water held by the water absorber 4 via the applying electrode 2. The mist M is generated by causing Rayleigh splitting of water existing in the needle-shaped atomizing portion of the water absorbing body 4 serving as a discharge point between the water atom 3 and the atomization.
[0003]
Also, a negative ion generator for generating negative ions is well known. This is to generate negative ions by applying a high negative voltage to the needle-like electrode facing the counter electrode to cause corona discharge.
[0004]
[Patent Document 1]
Japanese Patent No. 3260150
[Problems to be solved by the invention]
Although the electrical configuration of the electrostatic atomizer and the negative ion generator are almost the same, water cannot be retained on the needle electrode, and the voltage of the electrostatic atomizer is larger than that of the negative ion generator. When a high voltage for electrostatic atomization is applied to the negative ion generator, a large amount of ozone, which has a bad effect on the human body, is generated. Therefore, no electrostatic atomizer having a negative ion generating function has been provided so far.
[0006]
Some air purifiers include an electrostatic spraying device for wet dust removal, but no air purifier capable of discharging mist due to electrostatic atomization into a room has not been provided.
[0007]
The present invention has been made in view of such a point, and an object of the present invention is to provide an electrostatic atomizer having a negative ion generating function and an air cleaner having the same.
[0008]
[Means for Solving the Problems]
Thus, the electrostatic atomizer with the negative ion generating function according to the present invention comprises: an application electrode for applying a negative voltage to the water holding unit; a grounded counter electrode; A water-absorbing body that electrostatically atomizes the water sucked up from the water holding section with the needle-shaped atomizing section at the tip facing the ion-implanting section, and an ionization needle that generates negative ions by corona discharge between the counter electrode. It has features. The counter electrode is shared between electrostatic atomization and negative ion generation.
[0009]
At this time, the ionization needle is electrically connected to the application electrode, and the distance between the ionization needle and the counter electrode is larger than the distance between the needle-shaped atomizing portion of the water absorbent and the counter electrode. If the length is longer, the same negative voltage can be used for negative ion generation and electrostatic atomization, so the high voltage generation circuit used can be shared, and moreover, ozone generation The fear can be eliminated.
[0010]
It is also preferable that a plurality of water absorbers are arranged concentrically around the ionization needle. A uniform electric field can be easily applied to the needle-shaped atomizing portion of each water absorbing body, and stable mist generation can be obtained. In addition, the difference in the distance to the counter electrode can be easily set. .
[0011]
The ionization needle may have another end protruding into the water holding unit. The application of a negative voltage to the ionization needle can be reliably performed through water.
[0012]
The air purifier according to the present invention includes a fan for blowing air and a filter for removing dust, and the electrostatic atomizer with the negative ion generating function according to any one of claims 1 to 4, wherein the fan and the filter are used. It is characterized by being arranged on the downstream side of. Because it is possible to obtain the generation of mist and the generation of negative ions at the same time as the air purification by the filter, and because the electrostatic atomizer with the negative ion generation function is located downstream of the filter, Dust in the air hardly impairs the function of the electrostatic atomizer.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail based on an example of an embodiment. The illustrated electrostatic atomizer 1 includes a water tank 6 containing water to be atomized at a lower portion, and has a cylindrical shape. And a holder 10 having a ventilation hole 12 formed in the peripheral surface thereof, an opposing electrode 3 disposed on the upper part of the holder 10, an applying electrode 2 fitted into the lower part of the holder 10 for applying a voltage to water, and an applying electrode The water tank 6, which is composed of a plurality of rod-shaped water-absorbing bodies 4 held by the nozzle 2 and an ionization needle 5 also held by the application electrode 2, is formed in a cup shape and constitutes a water holding section. The projection 60 on the outer surface of the upper end opening edge is attached by bayonet engagement with the engagement recess 29 provided in the outer peripheral flange portion 21 of the application electrode 2 mounted on the lower portion of the holder 10. I have.
[0014]
The counter electrode 3 and the application electrode 2 are both made of a synthetic resin mixed with a conductive material such as carbon or a metal such as SUS, and have conductivity. The electrode 3 is grounded through a grounding contact plate 71 that contacts the outer surface of the connecting projection 30 formed on the outer peripheral surface. The applied electrode 2 which is fitted and fixed in the lower portion of the holder 10 and is fixed by the rib 11 on the inner surface of the holder 10 is also high via a contact plate 72 which also contacts the outer surface of the connecting projection 20 formed on the outer peripheral surface. Connected to voltage source.
[0015]
The rod-shaped water absorber 4 is made of porous ceramic and has a needle-like atomized portion having a needle-like upper end, and a plurality of, in the illustrated example, six water absorbers 4 are connected to the application electrode 2. Attached to. These water absorbers 4 are arranged at equal intervals on a concentric circle centered on an ionization needle 5 disposed at the center of the application electrode 2, and the upper part protrudes upward from the application electrode 2, and the lower part protrudes downward to form the above water. It comes into contact with the water contained in the tank 6.
[0016]
In the figure, reference numeral 22 denotes a cylindrical skirt projecting downward from the application electrode 2, surrounding the outside of the plurality of water absorbers 4, and having its lower end located below the lower end of the water absorber 4. The opening is covered with a grid-like protective cover 17. The skirt 22 of the application electrode 2 applies a high voltage to the water by coming into contact with the water contained in the water tank 6 and, at the same time, protects the water-absorbing body 4 formed of ceramic together with the lattice-shaped protective cover 17. Is what you do.
[0017]
Here, when the water tank 6 is connected, the application electrode 2 substantially closes the upper opening of the water tank 6 so that the water in the water tank 6 does not leak even when inclined. In this connection, a slit 23 is provided in a part of the skirt 22 in the circumferential direction over the entire length of the skirt 22 in the vertical direction, and is enclosed by the skirt 22 by the slit 23 when the water tank 6 containing water is mounted. The air in the space is removed to allow the water to flow into the skirt 22.
[0018]
The counter electrode 3 mounted so as to close the upper opening of the holder 10 has an opening 31 in the center as shown in FIG. 3, and the edge of the opening 31 is, when viewed from above, the plurality of water absorbing portions. A plurality of arcs R of the same diameter centered on the needle-shaped portion at the upper end of the body 4 are smoothly connected by another arc r. When the counter electrode 3 is grounded and a high voltage source is connected to the application electrode 2 and the water absorbing body 4 is sucking up water by capillary action, the needle-shaped atomizing portion at the upper end of the water absorbing body 4 is connected to the application electrode 2 side. At the same time, the arc R of the counter electrode 3 functions as a substantial electrode. Note that the opening 31 is covered with the lattice-shaped protective cover 16, thereby preventing a finger or the like from coming into contact with the ionization needle 5 or the water absorbing body 4 through the opening 31.
[0019]
At this time, the water tank 6 filled with water is attached, the water is brought into contact with the skirt 22 of the application electrode 2, and at the same time, the water is sucked up by the water absorbing body 4 by capillary action. When a negative voltage is applied to the application electrode 2 by connecting a high voltage source to the application electrode 2 and the voltage is a high voltage that can cause Rayleigh splitting in water, the needle-shaped mist at the upper end of the water absorber 4 The water that has reached the atomization section undergoes Rayleigh splitting, and is subjected to electrostatic atomization that causes atomization with a particle size of nanometer size.
[0020]
In the electrostatic atomizer 1, a negative voltage is simultaneously applied to the ionization needle 5 held by the application electrode 2, and negative ions are generated by corona discharge between the ionization needle 5 and the counter electrode 3. At this time, if the distance between the electrodes is the same, the voltage required for electrostatic atomization is higher than the voltage required for negative ion generation. By making the distance L2 from the ionization needle 5 to the counter electrode 3 considerably longer than the distance L1 to the counter electrode 3, electrostatic atomization is more likely to occur. However, if the water in the water tank 6 is exhausted and the water held by the water absorbing body 4 is not atomized, only the generation of the negative ions continues.
[0021]
FIG. 4 shows another example. In this configuration, the lower end of the ionization needle 5 disposed at the center of the counter electrode 3 is extended downward so as to come into contact with water in the water tank 6. The degree of electrical contact (resistance) between the application electrode 2 and the ionization needle 5 varies depending on manufacturing reasons. However, the water in the water tank 6 to which a negative voltage is applied by the application electrode 2 is attached to the ionization needle 5. Also, a stable negative voltage can be supplied to the ionization needle 5 by bringing the ionization needle 5 into contact. In the drawing, reference numeral 19 denotes a handle whose both ends are rotatably attached to the holder 10.
[0022]
FIGS. 5 and 6 show an air purifier 7 provided with the electrostatic atomizer 1. An air blower including a fan 82 driven by a motor 83 and a wind tunnel 70 is provided. After the air sucked from a suction port 76 on the front face is filtered by a filter unit 81, the air is discharged to the outside from a blowing port 77. In the air flow path from the suction port 76 to the outlet 77 in the air purifier 7, the electrostatic atomizer 1 is disposed in the wind tunnel 70 of the blower and at a position near the outlet 77. ing.
[0023]
The nano-sized mist, which is a mist with a nanometer-sized particle diameter generated by electrostatic atomization, has a high diffusivity from the beginning, but has a better diffusivity because it spreads on the air blower. Therefore, the deodorizing function for the odor components in the indoor air and the deposits on the indoor wall due to the active species of the nano-sized mist can be effectively used. In particular, in the illustrated example, when the electrostatic atomizing device 1 is disposed in the storage recess 73 provided in a part of the wind tunnel 70, the contact between the contact plates 71, 72 and the connection protrusions 20, 30 is determined. In order to enable this, a part of the inside of the electrostatic atomizer 1 is passed through an opening 74 (see FIG. 1) opened in the wall surface of the storage recess 73 and the ventilation hole 12 in the holder 10 of the electrostatic atomizer 1. Since the wind flows in, the atomization is promoted, the amount of the atomization increases, and the mist is easily scattered on the wind.
[0024]
Further, although the electrostatic atomizing device 1 is disposed in the wind tunnel 70, the air passing near the electrostatic atomizing device 1 is clean air filtered by the filter unit 81. Although the gasifier 1 does not become dirty and some of the wind enters the electrostatic filtration device 1 as described above, the dust is hardly generated due to the contamination.
[0025]
【The invention's effect】
As described above, in the electrostatic atomizer with the negative ion generating function according to the present invention, in order to share the counter electrode for the electrostatic atomization and the negative ion generation, the negative electrode generating function is also provided with a small number of parts. Things.
[0026]
In addition, the air purifier according to the present invention can obtain mist generation and negative ion generation at the same time as air purification by a filter. Is hardly impaired.
[Brief description of the drawings]
FIG. 1 is a sectional view of an example of an embodiment of the present invention.
FIG. 2 is a sectional view of the same.
FIG. 3 is a plan view showing a state in which the grid-like cover is removed,
FIG. 4 is a sectional view of another example of the above.
FIG. 5 is a longitudinal sectional view of an example of the air purifier according to the present invention.
FIG. 6 is a transverse sectional view of the same.
FIG. 7 is an explanatory view schematically showing an electrostatic atomizer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electrostatic atomizer 2 Applied electrode 3 Counter electrode 4 Water absorber 5 Ionization needle 6 Water tank

Claims (5)

水保持部に負電圧を印加する印加電極と、接地されている対向電極と、上記水に接触しているとともに上記対向電極に先端の針状霧化部を対向させて水保持部から吸い上げた水を静電霧化させる吸水体と、上記対向電極との間のコロナ放電でマイナスイオンを発生させるイオン化針とからなることを特徴とするマイナスイオン発生機能付き静電霧化装置。An application electrode for applying a negative voltage to the water holding portion, a grounded counter electrode, and a needle-shaped atomizing portion at the tip that is in contact with the water and opposed to the counter electrode was sucked up from the water holding portion. An electrostatic atomizer with a negative ion generating function, comprising: a water absorber for electrostatically atomizing water; and an ionization needle for generating negative ions by corona discharge between the counter electrode. 上記イオン化針は上記印加電極に電気的に接続されたものであるとともに、吸水体の針状霧化部と対向電極との間の距離よりもイオン化針と対向電極との間の距離の方が長くされていることを特徴とする請求項１記載のマイナスイオン発生機能付き静電霧化装置。The ionization needle is electrically connected to the application electrode, and the distance between the ionization needle and the counter electrode is greater than the distance between the needle-shaped atomizing portion of the water absorber and the counter electrode. The electrostatic atomizer with a negative ion generating function according to claim 1, wherein the electrostatic atomizer is elongated. 複数本の吸水体がイオン化針を中心とする同心円状に並んでいることを特徴とする請求項１または２記載のマイナスイオン発生機能付き静電霧化装置。The electrostatic atomizer with negative ion generating function according to claim 1 or 2, wherein a plurality of water absorbers are arranged concentrically around an ionization needle. イオン化針はその他端が水保持部内に突出していることを特徴とする請求項１〜３のいずれかの項に記載のマイナスイオン発生機能付き静電霧化装置。The electrostatic atomizer with a negative ion generating function according to any one of claims 1 to 3, wherein the other end of the ionization needle projects into the water holding unit. 送風用のファン及び除塵用のフィルターを備えるとともに、ファン及びフィルターの下流側に請求項１〜４のいずれかの項に記載のマイナスイオン発生機能付き静電霧化装置が配されていることを特徴とする空気清浄機。A fan for air blowing and a filter for dust removal are provided, and the electrostatic atomizer with the negative ion generating function according to any one of claims 1 to 4 is arranged downstream of the fan and the filter. An air purifier characterized.
JP2003159996A 2003-06-04 2003-06-04 Electrostatic atomizer with negative ion generation function and air purifier equipped with the same Expired - Lifetime JP4186718B2 (en)

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TW093115042A TWI243713B (en) 2003-06-04 2004-05-27 Electrostatic atomization device with function of creating negative ions and air purification device using the same

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